4.1 Scientific approaches Hibernation is an ingenious adaptation that some animals employ to survive difficult conditions in winter. This unit examines the differences between hibernation and torpor, and discusses the characteristic signs of hibernation behaviour. It explores the triggers that bring on hibernation, and whether internal signals or external season cues are predominant. It also examines the physiological adaptations that occur in hibernating animals. This unit builds on and develops ideas introduced in the Author(s): The Open University

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6.5 The neurotransmitters histamine and serotonin: a role for chemical signalling between neurons of Hibernation is an ingenious adaptation that some animals employ to survive difficult conditions in winter. This unit examines the differences between hibernation and torpor, and discusses the characteristic signs of hibernation behaviour. It explores the triggers that bring on hibernation, and whether internal signals or external season cues are predominant. It also examines the physiological adaptations that occur in hibernating animals. This unit builds on and develops ideas introduced in the Author(s): The Open University

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Inca Investigation This OLogy activity gives kids a chance to test their investigation skills while learning about daily life for the Incas. Inca Investigation begins with an introduction to archaeologist Craig Morris and the ancient Inca city that his team excavated in the Andes mountains. Then kids are given detailed directions for how to play Inca Investigation, which includes tips to help them better examine evidence. At any time, they can get help, learn how to read a plan, or browse a book about Inca historyAuthor(s): No creator set

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Composting Activity Information about composting as a natural method of reducing waste and recycling, plus instructions for creating and maintaining a compost heap.Author(s): No creator set

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Earthworm Worksheet Worksheet with questions and activities for children examining an earthworm.Author(s): No creator set

Order and Early Societies How do diverse political structures and relationships distribute power and material resources? Through the rise of the Chinese empire, Mayan regional kingdoms, and the complex society of Igbo Ukwu, this unit considers the origins of centralized states and alternative political and social orders. (28:35)Author(s): No creator set